BPA is an essential plasticizer. It is easy to make and leaves plastic both supple and strong. And it's everywhere -- not just in baby bottles but in dental fillings, on DVDs, and in the linings of nearly all food and beverage containers.

You can replace it with PET film -- Mylar is one trade name for it -- but that is going to take time and cost a lot of money.

So far only the Japanese have begun that process.

Look at the plastic containers in your home. Does it have the number 3 or 7 stamped on it? There may well be BPA in it. All those PVC pipes replacing copper in your water system? PVC is a 3.

So the FDA is starting with the easy stuff. Baby bottles. And it's not yet saying toss them. It's saying, toss the scratched ones.

Saying "baby bottles" in the material regulatory field is like saying "terrorism" or "child porn" in other areas of law enforcement. It's a first step toward something larger.

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